Bun forming machine



3 Sheets-Sheet l Ill i 9 v p r Q \N 3 1 r 7 ll m l H 1 3 I II I I' I] IIJ I f 3 km 3 Jan. 1, 1952 c. w. BREWER BUN FORMING MACHINE Filed April11, 1949 CARLOS W BREWER Zhmentor (Ittorneg Jan. 1, 1952 c. w. BREWERBUN FORMING MACHINE 3 Sheets-Sheet 2 Filed April 11. 1949 Jan. 1, 1952c. w. BREWER BUN FORMING MACHINE 3 Sheets-Sheet 5 Filed April 11, 1949Games W BREWER lhwentor (Ittorneg Patented Jan. 1, 1952 Eur omcE'minnomvnno Machine parlgsw;rewer, Fort Worth, Tex; applicatinnApril-ll,1949, Serial No. 86,747

invention relates r pairing. equ pme t.

and has reference to ainachinefor makinglbuns. doughnuts, and the likehaving re s'sies" therein for receiving food. The inventionis'particularly adaptable to the forming ,ofplongated buns and e l k hvinsdeep rece ses and c sed., 3 for rece vin .fra k urt r re s dro w twhich buns, :etc., will not d p juices or.-relis hes whe h in an priehpesi V en 01 1 1 .0 the press. not 51. vide a machine for quickly andeasily forming the dough prior to cooking the same.

Another object of the invention is to provide, in a machine for formingrecesses in buns or the like, a construction and arrangement whereby theproducts so formed are all substantially uniform, and wherein eachcooked unit contains approximately the same amount of dough.

Another object of the invention is to provide, in a machine of thereferred to class, a centering mechanism whereby the recesses formed inthe individual products are well centered.

These and other objects of the invention will become apparent from thefollowing description and the accompanying drawings, wherein:

Figure 1 is a side elevation of a bun or doughnut forming machineembodying the features of the present invention.

Figure 2 is a plan view of Figure 1.

Figure 3 is an elevation and broken sectional 0 view similar to Figure1, and showing the relative positions of the operating parts.

Figure 4 is a transverse view taken on line 4-4 of Figure 3.

Figure 5 is a sectional view and broken elevation of the dough spout andmandrel guide prior to placing the mandrel on the latter.

Figure 6 is a view similar to Figure 5, but showing the sliding mandrelin the guide.

Figure? is a view similar to Figure 6, but showing the mandrel receivedwithin the dough spout, and

Figure 8 is a view similar to Figure '7, but showing the dough formed onthe sliding mandrel.

The exemplary form of the invention shown includes a base 10, a doughdispenser H, and a mandrel support assembly H2. The dispenser II iscomprised of a vertical support l3 secured to one end of the base It), ahorizontal cylinder l4 which is closed, as at I5, at its outer end, anda hopper [6 above and opening into said cylinder. Within the cylinder Nthere is a conveyor screw I! having a shoulder l8 disposed for rotatablybearing against the closed cylinder end IS. A

.s i fii ill- 5 Q WUZQ .11 a R al. .-1$ 9 1" wid et-t e s en M thro hiha ede 11,5 ,of ,theipylinderid. A collar}? is detachably ec e th?'oute'r'endlb the a t 5hr 'ria 's of a set screw 12,1, 'and,a crank.22Qi s' welded or bi rw is se e t e qnair winn n the i bl vleyor screwl1. V The ,end of the cylinder a d 5; i fl wardl l and 'suppor ithe flane dough spout "25. 'The respectiveflanges*'23 and 24 are detachablysecured to each other by screws 26.

The mandre1 assembly l2 includes a vertical tubular standard or post 21supported on the base I!) opposite the dispenser II and is spaced fromthe dough spout 25. A suitable flanged collar 28 secures the post 21 tothe base Hi. A bearing 29 is pressed or otherwise secured in the upperend of the tubular post 21, and which bearing is provided with anenlarged upper end 30 having a transverse notch 3| across its uppersurface, as shown in Figures 3 and 4. There is a vertical opening 32through the center of the bearing 29 for rotatably receiving a shaft 33in the form of a headed screw. As shown in Figure 3, the head 34 of theshaft 33 is below the lower end of the bearing 29, and a compressionspring 35 is positioned around said shaft and between said head and saidhearing. The upper end of the shaft 33 is threaded into a transversemandrel guide 36 which is in axial alignment with the center of thedough spout 25 during the dough forming operation.

One of the projecting ends of the guide 86 slidably receives a tubularmandrel 3'! having a round closed outer end 38, and a locating flange 39around its outer surface and spaced from said round end.

The operation of the device is progressively illustrated in Figures 5through 8. The guide 36 is partially rotated by hand on the shaft 33 toassume the position shown by dotted lines in Figure 2 and the mandrel37, having grease over its surface, is positioned thereon. The guide 36and mandrel 31 are then aligned with the center of the spout 25, and byreason of the described notch 3| and action of the spring 35, themandrel is maintained in such position. Th mandrel 37 is then moved intothe spout 25, as shown in Figure 7. By turning the crank 22, dough 40within the hopper I6 is moved into the cylinder H, outwardly into thespout 25 and around the mandrel 31. The operators hand is then removedfrom the mandrel 31, but the operation t 2.3; to receive of the crank 22is continued until the mandrel has moved completely out of the spout 25,as shown in Figure 8. The dough 40 is then severed between the spout 25and the mandrel 31, leaving an uncooked bun or doughnut ll on thelatter. The mandrel with the bun, etc., formed thereon, is then cooked.After cooking, the product is easily removed from the mandrel. It is tobe understood that a multiple of the described mandrels 31 are to beemployed for cooking in quantities, and that mandrels used subsequent tothe first one are formed into the dough 40 remaining in the spout 25.

The described form of the invention may be made in many ways within thescope of the appended claims.

What is claimed is:

1. In a machine for forming recesses in dough.

2. In a machine for forming recesses in dough products, a cylindricaldough spout including an annular discharge end, a guide positionedoutwardly of and in alignment with the center of said discharge end ofsaid spout, a tubular mandrel having a closed end slidably mounted onsaid guide, said closed end being directed toward said discharge end ofsaid spout and adapted to be slidably received in the latter togetherwith a portion of said mandrel, a flange projecting from said mandreland adapted to engage said discharge end when said mandrel is receivedwithin said spout, the outer diameter of said formed therebetween.

products, a dough spout including a discharge end, a guide positionedoutwardly of and spaced from the center of said discharge end of saidspout, a tubular mandrel having a closed end slidably mounted on saidguide, said closed end being directed toward said discharge end of saidspout and adapted to be slidably received in the latter together with aportion of said mandrel, the outer diameter of said mandrel beingsmaller than the inner diameter of said spout discharge end by an amountequal to the wall thickness of the dough product formed therebetween.

' mandrel'being smaller than the inner diameter of said spout dischargeend by an amount equal to the wall thickness of the dough product CARLOSW. BREWER.

REFERENCES CITED The following references are of record in the file ofthis'patent:

UNITED STATES PATENTS '25 Number Name Date 754,549 Dietz Mar. 15, 1904978,224 Schrader et a1. Dec. 13, 1910 1,984,027 Lyons Dec. 11, 19342,189,217 McDonald Feb. 6, 1940 '30 2,447,182 Hutchinson A118. 17, 1948

